. >> this morning, the state of the race. a debate preview, and a look at the issues that will sway undecided voters. with us, republican governor of new jersey, the keynoter at the gop convention, chris christie. and for the obama campaign, the architect of his 2008 run, now white house senior adviser david plouffe. finally, insights and analysis from our political roundtable. joining us, conservative activist and founder of the faith and freedom coalition ralph reed. former democratic governor of pennsylvania ed rendell. anchor of bbc's "world news america" katty kay. and our chief white house correspondent and political director chuck todd. >>> good sunday morning. with both sides in full preparation mode for wednesday's first presidential debate, the struggling romney campaign is recalibrating his message to better connect with voters on the economy and to attack the president on his handling of the latest foreign policy crisis, the evolving explanation of what exactly happened in libya when our u.s. ambassador was killed